The potassium causes cessation of electrical and mechanical cardiac activity by blocking the initial phase of myocardial depolarization.
钾通过阻断心肌除极的起始相，导致电机械活动的停止。
These signals are from the cardiac tissue closest to the electrode, displaying a localized area instead of the electrical activity of the whole heart, as in the case of a surface EKG.
这些信号来自于最接近电极的心脏组织，显示局部区域，而不是整个心脏的电活动，如在表面ekg的情况下那样。
During atrial fibrillation, uncoordinated electrical activity leads to ineffective atrial contraction, reduced atrial filling time, and decreasing cardiac output.
在心房颤动，不协调电活动导致无效的心房收缩，减少心房充盈时间，减少心输出量。
During atrial fibrillation, uncoordinated electrical activity leads to ineffective atrial contraction, reduced atrial filling time, and decreasing cardiac output.
在心房颤动，不协调电活动导致无效的心房收缩，减少心房充盈时间，减少心输出量。
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